Electric switch.



M. GUETT.

ELECTRIC SWITCH,

APPLIOATION FILED Nov. 1, 1904.

Patented'Dec. 22, 1908.

2 SHEETS-SHEBT 1.

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M. GUETT.

ELECTRIC SWITCH.

uPLIoATIoN FILED Nov.1, 1904.

907,344. Patented Dec. 22, 1908.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

MONROE GUETT, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE HART & HEGEMAN MANUFACTURING COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ELECTRIC SWITCH.

Specification of Letters Patent.

Patented Dec. 22, 1908.

TomaZZ whom it may concern:

Be it known that I, MONROE GUETT, citizen of the United States of America, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Electric Switches, of which the following is a speci- 'fication The invention relates to electric switches in general and is particularly adaptable to what is known as a push button switch.

The object of the invention is to produce an article of the class specified having features of novelty and advantage, an especial feature of novelty and advantage in my present switch residing in the mechanism by which by a single push button the moving member of the switch is rotated in successive steps in one direction.

An embodiment of my invention is illustrated in the drawings in which- Figure 1 is a plan view of a switch embodying my invention showing the push button in section and the stop plate and poles indicated in dotted lines. Fig. 2 is an edge view looking from the right of Fig. l. Fig. 3 is a view similar to Fig. 1 but with the parts in their eXtreme inner position. Fig. 4 is a perspective view of a switch embodying my invention, the push button being partly broken away to show construction, this iigure corresponding to Fig. 3 after the push button has been released. Fig. 5 is a detail perspective view of the pole pieces. Fig. 6 is a detail perspective view of the stop plate. Fig. 7 is a detail perspective view of the detent plate. Fig. 8 is a detail view of the rack and pinion. Fig. 9 is a detail View of the cam plate with the push button, showing the pin r. Fig. 10 is a detail view of the locking lever.

Referring to the drawings ct denotes the base of the switch. This base supports a spindle b mounted to permit of rotary motion with respect to said base. Fixedly mounted on the spindle is the segmental pinion c which carries the spring detent plate CZ having fingers Z which engage the stop plate e which is preferably secured to the poles f, the stop plate and poles being mounted so as to permit of rotary motion with respect to the spindle.

Between the frame plate and the segmental pinion there is located a cam plate g having a slot g which receives the spindle and acts as a guide for the plate and having a second slot g2 with a cam g:s at one end. The cam plate is connected with the push button h. Pivoted on the base is the lever Z having a pin Z projecting from its lower side into the slot g2 in the cam plate. The lever also has an upstanding finger Z2 which is adapted to enter notches e in the stop plate. As shown in the drawings these notches c are formed by projections c2 e2 from the periphery of the stop plate. A rack r is located in the plane of the segmental pinion c and in mesh therewith. The end of this rack is guided by the pin projecting from its lower side into the slot g4 in the cam plate. A coil spring s is located around the stem of the cam plate and between the end of the rack r and the push button. The spindle projects to the rear of the base and has coiled about it a spiral spring t one end of which is secured to the base late and the other end secured to the spind e.

In describing the operation of this switch it is to be understood that the push button and the cam plate g to which it is attached and the rack r have a linear reciprocating movement and that the segmental gear c and the detent plate d secured thereto have an oscillating motion. The remaining parts, that is to say, the stop plate e and the poles f which are secured thereto have a continuous rotary motion in one direction proceeding a quarter turn at each step. It is also to be noted that the spring finger d of the detent plate CZ projects upwardly and engages the side of one of the projections c2 on the stop plate e which directly overlies this detent plate, these spring fingers d forming a driving connection in one direction between the segmental gear c and the stop plate c.

It will also be noted that the upstanding iinger Z2 on the lever Z is in engagement with one of the notches c on the stop plate e, thus locking the rack r, gear c, detent CZ, stop plate c and poles f against movement. In consequence of which it is seen that as the push button is pressed in the spring s is compressed between the end of the push button and the end of the rack r until such time as the pin Z on the under side of thelever Z rides out in the cam slot g3 in the cam plate g, at which time the spring s is fully compressed. This movement of the lever Z withdraws the upstanding iinger Z2 from the notch e in the stop plate e and releases all of the parts. The spring s now expands, driving out the rack r to the position shown in Fig. 3, this rack rotating the gear c, which, through the spring detent fingers d', rotates the stop plate e and the poles f which are secured thereto. The stop pin r carried by the rack r is moved into the path of movement of the projections e2 on the stop plate e, these pro- ]ections e2 bringing up against the stop r at each operation of the switch to stop the poles at the proper position. Around the spindle is coiled a spring t which is weaker than the spring s and has one end secured to the s indle and the other end held to the frame p ate a. As the spindle rotates under the influence of the spring s the spring t is wound up and Fig. 3 represents the position of the arts after the poles have been thrown and efore the push button is released. The release of this push button turns the spindle and the gear c which is fast to it back to the osition shown in Fig. 1, the rack is moved) back by the gearand through the spring s moves the push button and cam plate g back to the position shown in Fig. 1, the pin Z in the lever Zmoving down out of the cam slot g3 into the slot g2, permitting the iinger Z2 to move into one of the notches e in the stop plate e. During this backward movement of the gear c the spring detent iingers ride back under the next pair of projections on the stop plate springing up at the rear of and into contact with them.

It will thus be seen that at each pressure and release of the push button the oles are advanced a quarter turn and locke in place and the operating parts returned to their normal positions by the spring t.

I have illustrated and described one embodiment of my invention but it is clear that the arrangement and construction oi the parts can be altered without departing from the spirit of the invention.

What I claim as new and desire to secure by Letters Patent is 1. In an electric snap switch a base, an oscillating spindle supported therein, poles mounted on said spindle to rotate in one direction, a reciprocating push button, mechanism for translating reciprocating into rotary motion, said push button being movable inde endently of said mechanism and connecter therewith by a spring, said mechanism having positive driving engagement with said poles, a stop to hold said poiles and mechanism against movement during the initial movement of the push button, means for releasing said poles at a predetermined time,

and means for holding said poles against backward movement during the return movement of said push button and mechanism.

2. In an electric snap switch, the base, an oscillating spindle mounted therein, a member mounted on said spindle, a reciprocating part in engagement with said member, poles rotarily mounted on said spindle, forward driving connections between said member and said poles, a push button connected with said reciprocating art through a s ring, said spring, means for olding said po es against movement during the initial movement of the push button, and means for holding said poles against backward movement during the return movement of the ush button.

3. In an electric switch a ase, an oscillating spindle supported therein, a pinionmounted on said spindle, poles rotarily mounted on said spindle, a rack meshing with said pinion, a push button, and a spring connecting said push button with said rack, substantially as described and for the purposes set forth.

4. In an electric switch a base, an oscillating spindle mounted therein, a pinion secured to said spindle, poles mounted rotarily on said spindle, a rack meshing with said pinion, a push button, a spring connecting said push button with said rack, forward driving connections between said pinion and said poles, and means for preventing movement of the oles during the initial movement of the push utton.

5. In an electric switch a base, an oscillating spindle mounted therein, a pinion secured to said s indle, poles rotarily mounted on said spin le above said pinion, a detent plate secured to said pinion and having spring iingers adapted to engage the stop plate to move it in one direction, a cam plate slotted to receive the spindle and having a cam slot, a lever supported on the base having a pin working in said cam slot, and a finger coperating with said stop plate, a rack in mesh with said pinion, a push button secured to the stem of said cam plate, a compression spring connecting said push button with said rack, and a return spring, substantially as described.

6. In an electric switch the base, an oscillating spindle supported therein, actuating parts carried by said oscillating spindle, reciprocating parts in mesh with the oscillating parts on said s indle, poles rotarily mounted on the spindle, ocking devices for said oles, driving connection between said oscil ating parts and said poles, the push button, and a spring connecting said push button with said reciprocating parts, substantially as described.

7. In an electric switch a base, an oscillating spindle mounted therein, a pinion secured to said spindle, poles mounted rotarily on said spindle, a rack meshing with said pinion, a push button, a spring connecting said I push button with seid rack, forward driving In testimony whereof I afx my signature connections lfoetween said pinion and said in presence of two witnesses.

o es, means 01 reventing movement ofthe goles during the initial movement of the push MONROE GUETT 5 button7 a stop plate to determine the amount Witnesses:

of movement of the poles at each throw, sub- H. E. HART, Stantially as described. D. I. KREIMENDAHL. 

